87945822 has 36 divisors (see below), whose sum is σ = 197192736. Its totient is φ = 28298160.

The previous prime is 87945821. The next prime is 87945827. The reversal of 87945822 is 22854978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87945821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 221328 + ... + 221724.

It is an arithmetic number, because the mean of its divisors is an integer number (5477576).

Almost surely, 2^87945822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87945822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98596368).

87945822 is an abundant number, since it is smaller than the sum of its proper divisors (109246914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87945822 is a wasteful number, since it uses less digits than its factorization.

87945822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 433 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 87945822 is about 9377.9433779481. The cubic root of 87945822 is about 444.7047184708.

The spelling of 87945822 in words is "eighty-seven million, nine hundred forty-five thousand, eight hundred twenty-two".